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"We’re urging everyone to keep an eye on those you know who may be at risk this summer.

"If you’re able, ask if your friends, family or neighbours need any help."

Dr Waite advised people to visit the NHS Choices website for tips and guidance about action to take during a heatwave.

Royal Berkshire Hospital has also issued advice for people during the hot weather.

Spokeswoman Jo Warrior said: " If anyone feels unwell after being out in the sun, they should seek advice from their pharmacist, GP or NHS 111 in the first instance.

"Should the hot weather continue over the next few days and following Met Office forecasts, an internal alert will be issued to staff reminding them of the additional care needed, especially for patients in the more vulnerable groups such as the elderly, very young, and those with chronic illness.

"Some of the standard protocols during a heatwave are to provide patients with more fluids and encourage them to drink more than normal, suggest cold food choices, especially salad and fresh fruit which has a higher water content, ensure room temperatures are kept comfortable."

NHS and PHE advice for heatwaves

The NHS advises high temperatures can have a "significant effect on people's health if they last for at least two days and the night in between".

It's website advises the public to keep an eye on forecasts and check the weather if they are heading out.

During any rise in temperature it is important to keep yourself hydrated with cold drinks like water and diluted fruit juice.

NHS advice says to avoid alcohol, caffeine and high sugar drinks.

Cool baths and showers can also cool you down, as can splashing water on the inside of your wrists and knees.

The PHE Beat the Heat checklist advises shading windows during the day to keep the heat out.

It also advises taking a break from the heat by finding a cooler part of the house or even seeing if shaded areas outdoors are colder.

Opening windows at night and allowing air flow through your home is also a great way to keep the temperature down when it's safe to do so.